Yep that's very helpful thanks. This post is only about the possibility of adding a graphics card to your current system.
You are currently using the on board graphics. There is an empty PCI express x16 slot (for graphics card). The case is half height which means you would be limited to a half height card. The machine also has a 220W power supply which is not ATX form factor so would be difficult to replace. 220W power is on the low side so I wouldn't recommend any graphics card that requires external power.
Since it has an nvidia chipset I would strongly suggest an nvidia graphics card. All of the above pretty well limits you to a GeForce GT 430. Actually I use one of these in my home theatre pc also because it has an HDMI output and integrated audio. It is half height, lowish power, cheap (around A$70). It will definitely be a decent improvement upon what you have now but I think you should consider it as a short term measure. I guess if you are really tight on $$ right now then it could be the way to go.
You are currently using the on board graphics. There is an empty PCI express x16 slot (for graphics card). The case is half height which means you would be limited to a half height card. The machine also has a 220W power supply which is not ATX form factor so would be difficult to replace. 220W power is on the low side so I wouldn't recommend any graphics card that requires external power.
Since it has an nvidia chipset I would strongly suggest an nvidia graphics card. All of the above pretty well limits you to a GeForce GT 430. Actually I use one of these in my home theatre pc also because it has an HDMI output and integrated audio. It is half height, lowish power, cheap (around A$70). It will definitely be a decent improvement upon what you have now but I think you should consider it as a short term measure. I guess if you are really tight on $$ right now then it could be the way to go.